/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:01:05,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:01:05,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:01:05,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:01:05,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:01:05,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:01:05,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:01:05,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:01:05,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:01:05,294 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:01:05,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:01:05,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:01:05,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:01:05,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:01:05,296 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:01:05,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:01:05,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:01:05,297 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:01:05,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:01:05,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:01:05,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:01:05,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:01:05,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:01:05,299 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:01:05,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:01:05,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:01:05,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:01:05,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:01:05,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:01:05,302 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:01:05,302 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:01:05,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:01:05,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:01:05,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:01:05,498 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:01:05,499 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:01:05,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound100.c [2023-12-16 17:01:06,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:01:06,774 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:01:06,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound100.c [2023-12-16 17:01:06,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c3c9447/f9cce169b17d4fd7834d8ddb281eedf1/FLAG5b523e4c1 [2023-12-16 17:01:06,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c3c9447/f9cce169b17d4fd7834d8ddb281eedf1 [2023-12-16 17:01:06,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:01:06,791 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:01:06,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:01:06,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:01:06,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:01:06,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:01:06" (1/1) ... [2023-12-16 17:01:06,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e19bb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:06, skipping insertion in model container [2023-12-16 17:01:06,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:01:06" (1/1) ... [2023-12-16 17:01:06,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:01:06,932 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound100.c[538,551] [2023-12-16 17:01:06,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:01:06,969 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:01:06,986 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_unwindbound100.c[538,551] [2023-12-16 17:01:07,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:01:07,024 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:01:07,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07 WrapperNode [2023-12-16 17:01:07,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:01:07,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:01:07,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:01:07,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:01:07,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,075 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-12-16 17:01:07,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:01:07,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:01:07,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:01:07,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:01:07,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,107 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 17:01:07,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:01:07,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:01:07,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:01:07,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:01:07,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (1/1) ... [2023-12-16 17:01:07,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:01:07,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:01:07,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 17:01:07,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 17:01:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:01:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:01:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:01:07,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:01:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 17:01:07,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 17:01:07,271 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:01:07,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:01:07,652 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:01:07,670 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:01:07,670 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 17:01:07,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:01:07 BoogieIcfgContainer [2023-12-16 17:01:07,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:01:07,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:01:07,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:01:07,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:01:07,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:01:06" (1/3) ... [2023-12-16 17:01:07,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e874e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:01:07, skipping insertion in model container [2023-12-16 17:01:07,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:01:07" (2/3) ... [2023-12-16 17:01:07,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e874e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:01:07, skipping insertion in model container [2023-12-16 17:01:07,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:01:07" (3/3) ... [2023-12-16 17:01:07,676 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound100.c [2023-12-16 17:01:07,688 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:01:07,689 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:01:07,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:01:07,728 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e490497, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:01:07,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:01:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 17:01:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:01:07,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:07,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:07,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:07,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 65649153, now seen corresponding path program 1 times [2023-12-16 17:01:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616382179] [2023-12-16 17:01:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:07,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:07,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:01:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:07,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 17:01:07,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:01:07,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:07,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616382179] [2023-12-16 17:01:07,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616382179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:07,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:01:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583074552] [2023-12-16 17:01:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:07,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 17:01:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 17:01:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:01:07,970 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:08,002 INFO L93 Difference]: Finished difference Result 48 states and 82 transitions. [2023-12-16 17:01:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 17:01:08,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 17:01:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:08,010 INFO L225 Difference]: With dead ends: 48 [2023-12-16 17:01:08,010 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 17:01:08,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:01:08,016 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:08,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:01:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 17:01:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 17:01:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:01:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2023-12-16 17:01:08,063 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2023-12-16 17:01:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:08,063 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2023-12-16 17:01:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2023-12-16 17:01:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 17:01:08,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:08,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:08,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 17:01:08,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:08,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:08,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1205755883, now seen corresponding path program 1 times [2023-12-16 17:01:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810532563] [2023-12-16 17:01:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:08,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:08,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:08,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:01:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:08,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:01:08,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:01:08,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:08,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:08,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810532563] [2023-12-16 17:01:08,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810532563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:01:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095628999] [2023-12-16 17:01:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:01:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:01:08,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:08,429 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:08,634 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-12-16 17:01:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:01:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 17:01:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:08,636 INFO L225 Difference]: With dead ends: 37 [2023-12-16 17:01:08,636 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 17:01:08,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:01:08,639 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:08,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:01:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 17:01:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2023-12-16 17:01:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:01:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-16 17:01:08,645 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2023-12-16 17:01:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:08,645 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-16 17:01:08,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,645 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-16 17:01:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 17:01:08,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:08,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:08,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 17:01:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:08,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:08,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2004332404, now seen corresponding path program 1 times [2023-12-16 17:01:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505064813] [2023-12-16 17:01:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:08,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:08,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:08,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:01:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:08,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:01:08,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:01:08,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:08,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505064813] [2023-12-16 17:01:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505064813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:01:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007567802] [2023-12-16 17:01:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:01:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:01:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:01:08,936 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:08,964 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-12-16 17:01:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 17:01:08,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 17:01:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:08,965 INFO L225 Difference]: With dead ends: 43 [2023-12-16 17:01:08,965 INFO L226 Difference]: Without dead ends: 29 [2023-12-16 17:01:08,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:01:08,968 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:08,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:01:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-16 17:01:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-16 17:01:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:01:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-16 17:01:08,973 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 11 [2023-12-16 17:01:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:08,973 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-16 17:01:08,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 17:01:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-16 17:01:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 17:01:08,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:08,974 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:08,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:01:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:09,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:09,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1962237034, now seen corresponding path program 1 times [2023-12-16 17:01:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185312412] [2023-12-16 17:01:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:09,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:09,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:09,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:09,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:01:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:09,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:01:09,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:01:09,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:09,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185312412] [2023-12-16 17:01:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185312412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:01:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803262422] [2023-12-16 17:01:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:01:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:01:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:09,279 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:01:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:09,599 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-16 17:01:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:01:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-16 17:01:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:09,600 INFO L225 Difference]: With dead ends: 43 [2023-12-16 17:01:09,600 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 17:01:09,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:01:09,601 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:09,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 93 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:01:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 17:01:09,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2023-12-16 17:01:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 17:01:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-16 17:01:09,608 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2023-12-16 17:01:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:09,608 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-16 17:01:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:01:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-16 17:01:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 17:01:09,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:09,608 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:09,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:01:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:09,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:09,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 608183541, now seen corresponding path program 1 times [2023-12-16 17:01:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110510844] [2023-12-16 17:01:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:09,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:09,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:09,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:09,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:01:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:09,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:01:09,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:01:09,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:09,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110510844] [2023-12-16 17:01:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110510844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:09,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:09,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:01:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330489300] [2023-12-16 17:01:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:01:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:01:09,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:09,934 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:01:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:10,590 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2023-12-16 17:01:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:01:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-16 17:01:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:10,591 INFO L225 Difference]: With dead ends: 62 [2023-12-16 17:01:10,591 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 17:01:10,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:01:10,592 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:10,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 97 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 17:01:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 17:01:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-16 17:01:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 17:01:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-12-16 17:01:10,604 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 19 [2023-12-16 17:01:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:10,605 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-12-16 17:01:10,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 17:01:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-12-16 17:01:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 17:01:10,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:10,606 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:10,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 17:01:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:10,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:10,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 560729168, now seen corresponding path program 1 times [2023-12-16 17:01:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864176107] [2023-12-16 17:01:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:10,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:10,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:10,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:10,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:01:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:10,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:01:10,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:01:11,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:11,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:11,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864176107] [2023-12-16 17:01:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864176107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:01:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94710345] [2023-12-16 17:01:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:01:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:01:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:11,011 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:01:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:11,154 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2023-12-16 17:01:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:01:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-12-16 17:01:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:11,169 INFO L225 Difference]: With dead ends: 67 [2023-12-16 17:01:11,169 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 17:01:11,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:11,170 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:11,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:01:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 17:01:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-12-16 17:01:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 17:01:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2023-12-16 17:01:11,180 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 27 [2023-12-16 17:01:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:11,180 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2023-12-16 17:01:11,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:01:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2023-12-16 17:01:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 17:01:11,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:11,181 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:11,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:01:11,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:11,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:11,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash 562457046, now seen corresponding path program 1 times [2023-12-16 17:01:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125785647] [2023-12-16 17:01:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:11,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:11,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:11,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:11,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 17:01:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:11,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:01:11,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 17:01:11,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:01:11,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125785647] [2023-12-16 17:01:11,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125785647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:01:11,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:01:11,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:01:11,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804604997] [2023-12-16 17:01:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:01:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:01:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:01:11,590 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:01:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:12,070 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2023-12-16 17:01:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:01:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-12-16 17:01:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:12,071 INFO L225 Difference]: With dead ends: 73 [2023-12-16 17:01:12,071 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 17:01:12,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:01:12,072 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:12,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:01:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 17:01:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2023-12-16 17:01:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 17:01:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2023-12-16 17:01:12,080 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 27 [2023-12-16 17:01:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:12,080 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2023-12-16 17:01:12,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:01:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2023-12-16 17:01:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:01:12,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:12,081 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:12,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 17:01:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:12,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash 976926058, now seen corresponding path program 1 times [2023-12-16 17:01:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:12,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212204567] [2023-12-16 17:01:12,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:12,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:12,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:12,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:12,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:01:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:12,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:01:12,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 17:01:12,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:01:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 17:01:12,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:12,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212204567] [2023-12-16 17:01:12,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212204567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:01:12,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:01:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-16 17:01:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709382762] [2023-12-16 17:01:12,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:01:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 17:01:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 17:01:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:01:12,570 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 17:01:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:13,507 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2023-12-16 17:01:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:01:13,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 34 [2023-12-16 17:01:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:13,510 INFO L225 Difference]: With dead ends: 141 [2023-12-16 17:01:13,510 INFO L226 Difference]: Without dead ends: 116 [2023-12-16 17:01:13,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:01:13,511 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:13,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 156 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:01:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-16 17:01:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2023-12-16 17:01:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 74 states have internal predecessors, (86), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-16 17:01:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2023-12-16 17:01:13,524 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 34 [2023-12-16 17:01:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:13,525 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2023-12-16 17:01:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 17:01:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2023-12-16 17:01:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 17:01:13,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:13,525 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:13,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-16 17:01:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:13,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1560293058, now seen corresponding path program 1 times [2023-12-16 17:01:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985124173] [2023-12-16 17:01:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:13,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:13,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:13,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:13,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:01:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:13,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:01:13,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:01:13,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:01:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:01:16,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:16,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985124173] [2023-12-16 17:01:16,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985124173] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:01:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:01:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-12-16 17:01:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652694592] [2023-12-16 17:01:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:01:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:01:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:01:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:01:16,040 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 17:01:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:18,417 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2023-12-16 17:01:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:01:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-12-16 17:01:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:18,418 INFO L225 Difference]: With dead ends: 126 [2023-12-16 17:01:18,418 INFO L226 Difference]: Without dead ends: 122 [2023-12-16 17:01:18,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:01:18,420 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:18,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 87 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 17:01:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-16 17:01:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2023-12-16 17:01:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 81 states have internal predecessors, (92), 25 states have call successors, (25), 16 states have call predecessors, (25), 15 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-16 17:01:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2023-12-16 17:01:18,432 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 37 [2023-12-16 17:01:18,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:18,432 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2023-12-16 17:01:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 17:01:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2023-12-16 17:01:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 17:01:18,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:18,433 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:18,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:01:18,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:18,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:18,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash 367273510, now seen corresponding path program 1 times [2023-12-16 17:01:18,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:18,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560194121] [2023-12-16 17:01:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:18,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:18,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:18,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 17:01:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:18,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:01:18,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 17:01:18,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:01:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-16 17:01:19,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:01:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560194121] [2023-12-16 17:01:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560194121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:01:19,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:01:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 17:01:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847695816] [2023-12-16 17:01:19,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:01:19,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:01:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:01:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:01:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:01:19,164 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-16 17:01:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:01:21,663 INFO L93 Difference]: Finished difference Result 242 states and 295 transitions. [2023-12-16 17:01:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 17:01:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 50 [2023-12-16 17:01:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:01:21,666 INFO L225 Difference]: With dead ends: 242 [2023-12-16 17:01:21,666 INFO L226 Difference]: Without dead ends: 221 [2023-12-16 17:01:21,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-16 17:01:21,666 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 73 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:01:21,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 195 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 17:01:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-16 17:01:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2023-12-16 17:01:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 148 states have internal predecessors, (166), 49 states have call successors, (49), 26 states have call predecessors, (49), 25 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-16 17:01:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 260 transitions. [2023-12-16 17:01:21,694 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 260 transitions. Word has length 50 [2023-12-16 17:01:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:01:21,694 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 260 transitions. [2023-12-16 17:01:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-16 17:01:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 260 transitions. [2023-12-16 17:01:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 17:01:21,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:01:21,696 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:01:21,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:01:21,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:21,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:01:21,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:01:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -293585845, now seen corresponding path program 1 times [2023-12-16 17:01:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:01:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587729171] [2023-12-16 17:01:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:01:21,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:01:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:01:21,903 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:01:21,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 17:01:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:01:22,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 17:01:22,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:01:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 17:01:23,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 17:02:26,954 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:02:26,973 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:02:27,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:02:28,155 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 17:02:28,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 17:02:28,175 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:02:28,175 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-16 17:02:28,183 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:02:28,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:02:28,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:02:28 BoogieIcfgContainer [2023-12-16 17:02:28,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:02:28,196 INFO L158 Benchmark]: Toolchain (without parser) took 81405.46ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 150.4MB in the beginning and 89.4MB in the end (delta: 61.0MB). Peak memory consumption was 109.1MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,196 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory was 154.3MB in the beginning and 154.1MB in the end (delta: 153.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:02:28,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.28ms. Allocated memory is still 200.3MB. Free memory was 150.4MB in the beginning and 138.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.52ms. Allocated memory is still 200.3MB. Free memory was 138.8MB in the beginning and 137.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,197 INFO L158 Benchmark]: Boogie Preprocessor took 47.45ms. Allocated memory is still 200.3MB. Free memory was 137.0MB in the beginning and 135.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,197 INFO L158 Benchmark]: RCFGBuilder took 546.85ms. Allocated memory is still 200.3MB. Free memory was 135.0MB in the beginning and 122.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,197 INFO L158 Benchmark]: TraceAbstraction took 80523.88ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 121.7MB in the beginning and 89.4MB in the end (delta: 32.2MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2023-12-16 17:02:28,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory was 154.3MB in the beginning and 154.1MB in the end (delta: 153.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.28ms. Allocated memory is still 200.3MB. Free memory was 150.4MB in the beginning and 138.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.52ms. Allocated memory is still 200.3MB. Free memory was 138.8MB in the beginning and 137.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.45ms. Allocated memory is still 200.3MB. Free memory was 137.0MB in the beginning and 135.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 546.85ms. Allocated memory is still 200.3MB. Free memory was 135.0MB in the beginning and 122.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 80523.88ms. Allocated memory was 200.3MB in the beginning and 247.5MB in the end (delta: 47.2MB). Free memory was 121.7MB in the beginning and 89.4MB in the end (delta: 32.2MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 60 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 80.5s, OverallIterations: 11, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 175 mSDsluCounter, 1029 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 733 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 296 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=10, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 35 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 905 SizeOfPredicates, 9 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 375/432 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown